Mechanism for cleaning cotton and like filaments.



KRALL.

MECHANISM FOR CLEANING GOTTON AND LIKE PILAMENTS APPLICATION FILED APR. 17, 1908.

1,3133% Patented July 9, 1912.

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MECHANISM F03, CLEANING COTTON AND LIKE FILATVIEITTS.

Specification of Letters Patent.

Fatented JnlyiD, 1912.

Application filed April 17, 1908. Serial No. 27,711

To all w/tom it may concern:

Be it known that I, Gnono KRALL, a subject of the German Emperor, residing at ldiilhausen, in the Province of Alsace-Lorraine and Empire of Germany, have invented a new and useful Improvement in Mechanism for Cleaning Cotton and Like F ilaments, of which the following is a specification.

This invention relates to an improved grating for cotton cleaning machines, opening machines, and otherlike mechanism, especially designed for the preparing machines in the cotton spinning industry, and the arrangement of which. may be adjusted according to the requirements of the particular case. The adjustment may be made according to the quality of the cotton, the amount of moisture in the same during the working, the etticiency of the ventilation, the arrangement of the dust channels and the dust collector, the thickness of material, the number and kind of the strikers to which the material is exposed and the speed of rotation. All these points influence the ethciency of the cleansing and the opening up. The grating hereinafter described permits by reason of its special adjustability all these circumstances to be taken into account in each separate case, and secures the best possible cleansing and opening up without damage to the staple and without loss of good filaments. This adjustment is attained by the following means: 1. The number of bars can be increased or diminished according to need in the manner set forth. 2. The bars can be adjusted in relation to their distances apart with the greatest ease. 3. The inclination of the bars is adjustable according to need in such a inanner that the separate bars may receive consecutively a progressively greater or less inclination, whereby the efiiciency of the grating is very considerably increased.

The drawing illustrates the invention as follows:

Figure 1 shows the arrangement of the grating in longitudinal section. Fig. 2 shows a section through the side support of the grating on the line AB of Fig. 1. Fig. 3 shows a similar section on the line CD of Fig. 1. Figs. 4c and 5 show details 0f the construction.

Each of the two side supports of the grating consists of a fixed part a and an adjustable part b. The ends of the barsrest at both ends in the channel formed by the connection of the parts a and Z). The fixed part a is firmly screwed to the cleaning frame. It possesses an upper limiting rim 0 which is adjusted concentrically to the rack of the striking organ (Z (shown in the drawing as a beater vane) so that the arcshaped track formed by the upper edges of the bars has as its center the center of revolution a: of the vane (Z. The movable part Z) is secured by means of screws 6 and f to the part a. The screws 9 and 72, and slots 2' and 72 provide for the adjustment and fixing of the part 5 in any requisite position. The lower-limiting ridge Z of the arc-shaped recesses can in this way be adjusted eccentrically with regard to the up er limiting ridge 0, so that the distance apart of the two ridges c and Z is less at the point of entrance of the filaments than at the point of exit, that is to say, at the lower end, or vice versa. By this progressive broadening of the recess in the one or the other direction, the bars m of the grating are obliged progressively to diminish or increase their inclination to the imaginary radius directed to the center of revolution of the beating organ.

Between each of the separate bars m of the grating, there is placed a little separating block a in the recess. These blocks are interchangeable and the several blocks vary in thickness from a to 12 millimeters, so that the distance between the separate bars can be adjusted accordingly. The blocks possess underneath each a heel piece projecting into the lower part of the recess, which prevents the block from falling out. The spacing blocks a may either extend entirely from end to end of the bars m or may only be arranged at the ends of the said bars. The set screw 0 effects the pressing of the bars from the last bar to the first. On a metal piece 72 inserted after the last bar at there is screwed fast a piece of sheet iron q, which closes the opening to the rear of the grating. In order to reduce the length of the grating requisite there is inserted. between the last bar m and the set screw 0 a metal piece 79 of corresponding length, in case the set screw 0 does not suffice for the attainment of this object.

In machines as hitherto constructed hackling bars or combs were used from st to 10 cm. width provided each with 4 to 3 rows of teeth, which could not serve as grating bars and which prevented the most effective part of the grate from acting in the separation of impurities, without reference to the fact that the number of teeth was' often too great and therefore acted injuriously. In the improved apparatus the number of rows of teeth can be varied according to requirement and the toothed bar is at the same time a grating bar, so that these drawbacks are avoided.

In Fig. l of the drawings, the three first bars where the fibrous material enters the apparatus are shown as provided with pins. Fig. 5 shows such a bar on a larger scale. This bar consists of a metal rod in which wire pins are mounted the projecting ends of which are ground or filed to a point.

he ribs 0 and Z are arranged at Varying progressive distances apart so that each bar is somewhat more inclined than the next.

As each bar abuts against both the rib 0 and the rib Z, then because of the increasing width of the support the inclination of each bar will vary with respect to the others.

t fhat I claim is:

1. An adjustable grating for rotary cleaning mechanism for cotton and like filaments comprising in combination a bearing frame forming an arc of a circle concentric with the axis of rotation of the rotary member, a series of movable transverse bars in said frame, movable spacing blocks between the said bars and means for adjusting the lower part of the supporting frame relatively to the upper part thereof.

2 An adjustable grating tor rotary cleaning mechanism for cotton and like filaments comprising in combination the fixed upper frame a, the lower part 6 adjustable with regard to the upper frame, the bars m sup ported at their ends between a and b and so that by the adjustment of Z) their position relatively to the rotary member of the ma chine is determined, the spacing blocks a, the covering plate 9 attached to the last bar 7), and the set screw 0 adapted to maintain the bars and plate firmly in place, substantially as described.

In testimony whereof I have signed myname to this specification in the presence of two subscribing w1tnesses.

GEORG KRALL.

Witnesses Gno. GIrroRD, ANDREW HEER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

